| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.05 |
| Score | 0% | 61% |
Which of the following statements about solding is not true?
flux is used to clean surfaces before soldering |
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solder is an alloy of lead and tin |
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solder has a comparatively low melting point |
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soldering can only join metals |
Soldering is a process by which two or more items (typically metal) are joined together by melting a filler metal (solder) into the joint. An electrically powered soldering iron or soldering gun is used to melt the solder which is an alloy of lead and tin that has a melting point below the melting point of the items being joined. A chemical cleaning agent called flux is also used to clean the surfaces before soldering.
You're replacing the hubcaps on a car. Which of the following are you most likely to use?
rubber mallet |
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ball-peen hammer |
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claw hammer |
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wooden mallet |
A mallet is a hammer with a relatively large head, often made of rubber or wood. Both the size and material of the mallet head help prevent damage when striking more delicate surfaces.
This tool is a(n) __________.
chisel |
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screwdriver |
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punch |
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awl |
A punch is narrow and is used to drive objects like nails (pin punch) or for making guide marks for drilling (center punch) or patterns in wood or metal.
When cutting hard metals with a hacksaw you should choose a blade with __________ teeth per inch (TPI).
low |
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even |
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odd |
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high |
Blades with more and smaller teeth (high TPI) cut harder metals more effectively while blades with fewer and larger teeth (low TPI) cut softer metals more effectively.
Which of the following statements about an 8-point saw is not true?
an 8-point saw makes a finer cut than a 12-point saw |
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an 8-point saw has eight teeth per inch |
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an 8-point saw makes a rougher cut than a 12-point saw |
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an 8-point saw makes a rougher cut than a 6-point saw |
Saw blades are described by the number of teeth per inch (TPI). The higher the TPI of a saw the finer the cut it will make.